CHRISTOPHER JOHN WILLIAMSON MD
NPI 1326675208
Radiology - Radiation Oncology in Stockbridge, GA
About Christopher John Williamson Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
CHRISTOPHER JOHN WILLIAMSON MD (NPI 1326675208) is an individual radiation oncology provider in Stockbridge, Georgia, licensed in Georgia (103707) and active in the NPI registry since March 2020. He is enrolled in Medicare PECOS, is affiliated with Northside Hospital, and is a graduate of Medical College Of Georgia School Of Medicine (2020).
NPPES Registry Identity
Specialties & Licenses
Group Practice 1
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Christopher John Williamson Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignment
Medicare enrollment records show Christopher Williamson reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Fayetteville, GA 30214
- Reassigned Medicare billing, Georgia enrollment
- 9 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Hospital Affiliations CMS Care Compare 4
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Northside Hospital
Acute Care Hospitals · Atlanta, GAPiedmont Henry Hospital
Acute Care Hospitals · Stockbridge, GAPiedmont Fayette Hospital
Acute Care Hospitals · Fayetteville, GAPiedmont Newnan Hospital, Inc
Acute Care Hospitals · Newnan, GAPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 30281 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES 2
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
STOCKBRIDGE, GA 30281
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is Christopher Williamson's NPI number?
The NPI number for Christopher Williamson is 1326675208. It was assigned to this individual provider in the NPPES registry on March 23, 2020.
Where is Christopher Williamson located?
Christopher Williamson practices at 960 Hospital Dr, Stockbridge, GA 30281. The listed phone number is (770) 907-0554.
What is Christopher Williamson's specialty?
The primary specialty registered for this NPI is Radiology, specializing in Radiation Oncology, with taxonomy code 2085R0001X.
Is Christopher Williamson enrolled in Medicare?
Yes. Christopher Williamson is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organization bills Medicare for Christopher Williamson's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Christopher Williamson reassigns Medicare benefits to Therapeutic Radiation Oncology, PC (Fayetteville, GA). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Christopher Williamson's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Christopher Williamson accept?
Health plans from Alliant Health Plans, Inc. list Christopher Williamson as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
Is Christopher Williamson affiliated with any hospitals?
According to CMS data, Christopher Williamson is affiliated with Northside Hospital, Piedmont Henry Hospital, Piedmont Fayette Hospital and Piedmont Newnan Hospital, Inc.
When was this NPI record last updated?
The NPPES record for Christopher Williamson was last updated on July 28, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.
# Christopher John Williamson, MD · NPI 1326675208
Radiation Oncology physician in Stockbridge, Georgia. Individual provider, active in the CMS NPPES registry since March 23, 2020.
## Identity
- **NPI:** 1326675208 (Entity type: Individual)
- **Enumerated:** March 23, 2020
- **Primary specialty:** Radiology - Radiation Oncology · taxonomy 2085R0001X
- **State license:** 103707 (Georgia)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 960 HOSPITAL DR, Stockbridge, GA 30281-7345
- **Phone:** (770) 907-0554
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** Therapeutic Radiation Oncology, PC (NPI 1629019534, Fayetteville, GA), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Medical College Of Georgia School Of Medicine, class of 2020
## Record status
- **NPPES last updated:** July 28, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1326675208) · Data from the CMS NPPES public registry.